Unfortunately, American culture (and many cultures around the world) objectify women and value them based on their looks. So Google's search results may just be a true reflection of what people are interested in looking at. Perhaps Bing's algorithms aren't as good as Google's algorithms in estimating what people might be more interested in.
To be clear, I didn't intend my statement as a feminist critique of society (though personally I would agree with this feminist critique). I just used this example as a roundabout way of defending Google's algorithm and saying that Google gives us the search results we deserve (and ask for) and not the search results that (from Auerback's perspective and mine) we should probably be more interested in.